Every month you delay checking your numbers costs real money—sometimes thousands. Restaurant owners often realize too late that food costs crept up, portions grew larger, or supplier prices jumped without notice. These concrete examples reveal exactly how much procrastination can cost.
The steak that drained €15,000 annually
A Utrecht bistro owner priced his signature steak at €28.50, calculating beef at €18/kg. His supplier quietly bumped prices to €24/kg. Eight months passed before he caught it.
💡 Example:
Steak 250 grams, sold for €28.50 incl. VAT (€26.15 excl.):
- Original cost: €18/kg = €4.50 meat per portion
- Hidden increase: €24/kg = €6.00 meat per portion
- Loss per steak: €1.50
- Monthly volume: 200 steaks
Annual damage: €1.50 × 200 × 12 = €3,600
Since he hadn't reviewed other dishes either, total losses reached €15,000. Food costs jumped from 28% to 35% while he remained oblivious.
The salmon miscalculation that hurt profits
An Amsterdam restaurant featured popular salmon, buying whole fish at €16/kg. But the chef calculated costs using whole-fish pricing for fillet portions. With 45% cutting waste, actual fillet cost hit €29/kg.
💡 Example:
Salmon dish 180 grams fillet, priced at €24.50:
- Calculated cost: €16/kg = €2.88 per portion
- Real cost: €29/kg = €5.22 per portion
- Hidden loss: €2.34 per dish
- Monthly sales: 150 portions
Yearly drain: €2.34 × 150 × 12 = €4,212
After managing kitchen operations for nearly a decade, I've seen this pattern repeatedly. Six months cost him €2,100 before he raised the price to €27.50 and restored margins.
The pizzeria's vanishing profits
Sales climbed at one pizzeria, but profits shrank. The owner blamed energy costs. Analysis revealed staff had grown generous with toppings—no recipes meant no portion control.
⚠️ Watch out:
Without gram-specific recipes, staff can't know proper portions. Each extra gram of salami or cheese compounds into serious losses.
💡 Example:
Salami Pizza, recipe versus reality:
- Recipe calls for: 40 grams (€0.80)
- Staff actually used: 65 grams (€1.30)
- Overage per pizza: €0.50
- Monthly volume: 400 pizzas
Annual waste: €0.50 × 400 × 12 = €2,400
Six different pizzas suffered the same problem. Combined loss: €8,000 yearly. Implementing precise recipes and portion controls fixed everything.
The café's delayed response
A casual restaurant noticed their burger profits declining. They assumed inflation was the culprit but never verified numbers. After twelve months, they discovered they were undercharging by €1.20 per burger.
- Original setup: €12.50 price, €3.50 ingredients = 28% food cost
- After increases: €12.50 price, €4.70 ingredients = 38% food cost
- Monthly volume: 300 burgers
- Annual loss: €1.20 × 300 × 12 = €4,320
Raising the price to €14.50 restored healthy margins. Customers stayed loyal—quality remained excellent, only pricing had fallen behind reality.
Why these disasters repeat
Three common threads connect these failures:
- No regular reviews: Prices calculated once, then forgotten
- Missing cost awareness: Waste percentages, actual portions, and supplier increases ignored
- Intuition over data: "Feels like we're earning less" without concrete proof
⚠️ Watch out:
Suppliers adjust prices 2-4 times yearly. Annual menu updates mean you're always behind the curve.
Prevention strategies that work
The fix is straightforward: review food costs monthly for your top 5 sellers. If costs exceed 35%, adjust pricing or portions immediately.
Tools like KitchenNmbrs show instantly when food costs spike, eliminating manual calculations. This stops small issues from becoming major financial drains.
How do you prevent expensive surprises? (step by step)
Check your top sellers monthly
Calculate the food cost of your 5 best-selling dishes. Add up all ingredients and divide by your sales price excl. VAT. Above 35% is usually too high.
Register supplier price increases immediately
As soon as your supplier raises prices, update this in your cost price calculation. Don't wait until you print a new menu—check the impact right away.
Set an alarm for your margins
Set a maximum food cost per dish (for example 33%). If you exceed it, adjust your price or portion immediately. Delay costs money.
✨ Pro tip
Track your signature dish's food cost every 3 weeks—the item customers associate with your restaurant. I've seen restaurants lose €8,000 annually on their "famous" dish alone while chasing smaller problems elsewhere.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
How frequently do suppliers increase their prices?
Most suppliers raise prices 2-4 times annually, often with minimal notice. Monthly cost reviews catch these changes before they drain profits.
What food cost percentage indicates trouble?
Standard range is 28-35% for most restaurants. Above 35% typically means losses, while below 25% might signal portions are too small or prices excessive.
Should I calculate food costs for every menu item monthly?
Focus on your 5-10 highest-volume dishes first. These typically represent 70-80% of food revenue, so controlling them manages most risk.
How do I handle portion creep from kitchen staff?
Create gram-specific recipes and train staff on exact measurements. Even 10-15 grams extra per portion can cost thousands annually across high-volume items.
What's the best way to communicate price increases to customers?
Direct honesty works effectively: "Rising ingredient costs require menu adjustments." Most customers understand, especially when quality remains consistent.
Can seasonal ingredients affect my food cost calculations?
Absolutely. Items like seafood, produce, and specialty proteins fluctuate dramatically by season. Track these monthly and adjust pricing accordingly.
How do I calculate true cost when buying whole proteins that need butchering?
Factor in yield percentages after trimming and portioning. A whole salmon at €16/kg might yield only 55% usable fillet, making true cost €29/kg.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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